Doepfer A-138n VE, Eurorack Module, Vintage Edition with a black front panel, Compact 4-channel mixer, Suitable for CV and audio signals, Volume control available per each channel, 4 x Input, 2 x Mix output, Current consumption: 10 mA (+12 V) / 10 mA (-12 V), Width: 4 TE, Depth: 30 mm